windows/winhelp.c

   1 /*
   2  * Windows Help
   3  */
   4
   5 #include <stdlib.h>
   6 #include <stdio.h>
   7 #include <string.h>
   8 #include <unistd.h>
   9 #include "debugtools.h"
  10 #include "wine/winuser16.h"
  11 #include "wine/winbase16.h"
  12 #include "winversion.h"
  13 #include "heap.h"
  14 #include "ldt.h"
  15 #include "syslevel.h"
  16
  17 DEFAULT_DEBUG_CHANNEL(win)
  18
  19
  20 /**********************************************************************
  21  *             WinHelp16   (USER.171)
  22  */
  23 BOOL16 WINAPI WinHelp16( HWND16 hWnd, LPCSTR lpHelpFile, UINT16 wCommand,
  24                          DWORD dwData )
  25 {
  26   BOOL ret;
  27   /* We might call WinExec() */
  28   SYSLEVEL_ReleaseWin16Lock();
  29   ret = WinHelpA( hWnd, lpHelpFile, wCommand, (DWORD)PTR_SEG_TO_LIN(dwData) );
  30   SYSLEVEL_RestoreWin16Lock();
  31   return ret;
  32 }
  33
  34
  35 /**********************************************************************
  36  *             WinHelp32A   (USER32.579)
  37  */
  38 BOOL WINAPI WinHelpA( HWND hWnd, LPCSTR lpHelpFile, UINT wCommand,
  39                           DWORD dwData )
  40 {
  41         static WORD WM_WINHELP = 0;
  42         HWND hDest;
  43         LPWINHELP lpwh;
  44         HGLOBAL16 hwh;
  45         HINSTANCE winhelp;
  46         int size,dsize,nlen;
  47
  48
  49         if(!WM_WINHELP)
  50           {
  51             WM_WINHELP=RegisterWindowMessageA("WM_WINHELP");
  52             if(!WM_WINHELP)
  53               return FALSE;
  54           }
  55
  56         hDest = FindWindowA( "MS_WINHELP", NULL );
  57         if(!hDest) {
  58           if(wCommand == HELP_QUIT)
  59             return TRUE;
  60           else
  61             if ( VERSION_GetVersion() == WIN31 ) {
  62               winhelp = WinExec ( "winhelp.exe -x", SW_SHOWNORMAL );
  63               Yield16();
  64             }
  65             else {
  66               winhelp = WinExec ( "winhlp32.exe -x", SW_SHOWNORMAL );
  67             }
  68           if ( winhelp <= 32 ) return FALSE;
  69           if ( ! ( hDest = FindWindowA ( "MS_WINHELP", NULL ) )) return FALSE;
  70         }
  71
  72
  73         switch(wCommand)
  74         {
  75                 case HELP_CONTEXT:
  76                 case HELP_SETCONTENTS:
  77                 case HELP_CONTENTS:
  78                 case HELP_CONTEXTPOPUP:
  79                 case HELP_FORCEFILE:
  80                 case HELP_HELPONHELP:
  81                 case HELP_FINDER:
  82                 case HELP_QUIT:
  83                         dsize=0;
  84                         break;
  85                 case HELP_KEY:
  86                 case HELP_PARTIALKEY:
  87                 case HELP_COMMAND:
  88                         dsize = strlen( (LPSTR)dwData )+1;
  89                         break;
  90                 case HELP_MULTIKEY:
  91                         dsize = ((LPMULTIKEYHELP)dwData)->mkSize;
  92                         break;
  93                 case HELP_SETWINPOS:
  94                         dsize = ((LPHELPWININFO)dwData)->wStructSize;
  95                         break;
  96                 default:
  97                         WARN("Unknown help command %d\n",wCommand);
  98                         return FALSE;
  99         }
 100         if(lpHelpFile)
 101                 nlen = strlen(lpHelpFile)+1;
 102         else
 103                 nlen = 0;
 104         size = sizeof(WINHELP) + nlen + dsize;
 105         hwh = GlobalAlloc16(0,size);
 106         lpwh = GlobalLock16(hwh);
 107         lpwh->size = size;
 108         lpwh->command = wCommand;
 109         lpwh->data = dwData;
 110         if(nlen) {
 111                 strcpy(((char*)lpwh) + sizeof(WINHELP),lpHelpFile);
 112                 lpwh->ofsFilename = sizeof(WINHELP);
 113         } else
 114                 lpwh->ofsFilename = 0;
 115         if(dsize) {
 116                 memcpy(((char*)lpwh)+sizeof(WINHELP)+nlen,(LPSTR)dwData,dsize);
 117                 lpwh->ofsData = sizeof(WINHELP)+nlen;
 118         } else
 119                 lpwh->ofsData = 0;
 120         GlobalUnlock16(hwh);
 121         return SendMessage16(hDest,WM_WINHELP,hWnd,hwh);
 122 }
 123
 124
 125 /**********************************************************************
 126  *             WinHelp32W   (USER32.580)
 127  */
 128 BOOL WINAPI WinHelpW( HWND hWnd, LPCWSTR helpFile, UINT command,
 129                           DWORD dwData )
 130 {
 131     LPSTR file = HEAP_strdupWtoA( GetProcessHeap(), 0, helpFile );
 132     BOOL ret = WinHelpA( hWnd, file, command, dwData );
 133     HeapFree( GetProcessHeap(), 0, file );
 134     return ret;
 135 }